Arduino/RFID-Reader

Projects
Participants
Skills	etching, soldering, tweaking
Status	Dead
Niche	Electronics
Purpose	Use in other project

For use in Doorbot.

An rfid reader could be made using an arduino, a simple circuit, and winding our own antenna: DIYRFIDReader (Appearently this doesn't work)

The fobs we want to read are of the Proxkey IIII variant which operate at 125kHz: proxkeyIII_ds_en.pdf

Bill Of Materials

Resistors:

• 8K (8k2 or 4k7+3k3)
• 2 x 12K
• 2 x 100K
• 220K
• 1M

Capacitors:

• 2 x 1nF
• 7nF (6.8)
• 15nF
• 2 x 100nF

Op-amps:

• 2 x LM324N (LM324NE3 sampled)

Diodes:

• 2 x 1N914

Coil:

• 35 turns @ 3.25"D

Further Reading

• cq.cx/prox.pl